Chimney structure



May 3, 1938. H LEASH 2,116,118

CHIMNEY STRUCTURE} Filed March 23, 1937 E f g N) V 'w N K. A HIEIIII: & Q o r INVENTOR Ham er E. Leash BYT.MW

' ATTONEYS Patented May 3, 1938 UNITED STATES PATENT OFFICE CHIMNEY STRUCTURE Homer El Ileas h, Portland, Oreg; Application March 23, 1937, Serial No. 132,566

,2, claims. (011125- 307) My invention relates to the construction-[of chimney attachments for the'outside of buildings, and, in particular, to inexpensive chimney constructions suitable for cabins, cottages and'the like. 1

Due to the work and expense involved in the construction of brick chimneys, and to the necessity of providing adequate support for their weight, it is customaryin cabins and cottages of the inexpensive or temporary types, to provide, on the outside of such buildings, in place of brick chimneys, merely stovepipes made of sheet iron, or in some instances of terra cotta. Such constructions are ugly in appearance, more or less temporary, and also often constitute a fire hazard.

One object of my invention is to provide an inexpensive outside chimney attachment which is easily constructed and easily set up into place.

Another object of my invention is to provide a chimney construction which will offer greaterprotection against fire than the common types of chimneys above referred to.

Another object of my invention is to provide a chimney construction of permanent character, and of comparatively light weight so that, when the chimney is attached to the building, it will not cause any strain on the building tending to result in any uneven. settling of the building.

A further object of my invention is to provide a chimney suitable for meeting the above mentioned requirements, which, due to its construction, will incidentally present a pleasing external appearance and, consequently, be more attractive than the conventional stovepipes protruding from the outside walls.

These and incidental objects and advantages I attain by making my chimney of prefabricated metal members, so that the chimney can be easily set up into place or taken down and moved. The details of construction of my invention are hereinafter described with reference to the accompanying drawing, in which:

Fig. 1 is an elevational view showing my chimney attached to the outside of the wall of a building;

Fig. 2 is a vertical section of the building wall in which my chimney is installed, the section corresponding to line 22 of Fig. 3;

Fig. 3 is a horizontal section on the line 3-3 of Fig. 2 looking in the direction indicated by the arrows; and

Fig. 4 is a fragmentary perspective view of the metal strip a which constitutes one of the elements of my construction.

Referring first to Figs. 2 and 3, denotes the usual sheet iron stovepipe leading from the stove I s to the outside oi the buildingandthence upward to extend above the edge of the roof. The place where the pipe 0 extendsthru thefbu'il'ding wall 10! is protected by an insulatedthimble d of usual =5 construction thru the center of which the pipe 0 passes; Securedlto the outside" surface [of the building wall mg -parallel with the outside vertical extension of the pipe 0, are fastened'metal strips a. formed into'a'channel shapepas shown in Figs.

3 and ll These metal strips-d are provided 'with "fiangesb which are securedto the outside surface of the wall=by's'crews. The outside vertical extension of the'pipe c is supported by metal straps or brackets e', the ends ofwhich are attached by bolts 0, to the upper metal strip a as shown in Fig.

2. These brackets hold the outside section of pipe 0 in position and rigidly spaced from the strip a, and thus from the outside surface of the building wall. On the upper end of pipe 0 is preferably mounted a metal conical hood 1 of the usual type.

When the strip a, the outer extension of the chimney pipe 0 and the brackets e have been secured in place, a three-sided outer metal housing 9 is then set up and attached to the strips a by suitable bolts extending thru the sides of the strips a and the edges h and a of the metal housing 9, as shown in Fig. 3. The metal housing g is made of a single metal sheet which is pressed into shape as shown, and is preferably painted on the outside to resemble brick or stone, as illustrated in Fig. 1. The lower ends 19 of the two sides of the housing 9 are preferably out off at an angle (see Fig. 2) and the bottom end k of the middle 5 portion of the housing g is bent inward, and is cut so as to extend about half way down the sloping edges of the ends 11; thus leaving a space at the bottom of the housing 9 for air to enter freely into the inclosure and circulate around the outer extension of the pipe 0. This inclosure thus formed by the housing g is surmounted at the top by a tapering transitional metal fitting or hood m, cut to fit tightly around the pipe 0. The lower edge of this fitting overhangs the walls of the housing g, and this fitting is supported by brackets q, attached to the upper end of the housing g, which hold the fitting m spaced from the upper edges of the walls of the housing g, thus providing an opening m for the escape of the heated air under the edge of the fitting m, at the same time keeping out the weather from the space inclosed by housing g as mentioned. The chimney is completed by the insertion of a metal strip n between the fitting m and the roof of the building for the purpose of diverting the water from that portion of the roof.

It will be apparent from Figs. 1 and 2 that the housing 9, made and set up in the form described, not only furnishes a protective covering for most of the outside chimney pipe 0, and protects the pipe from rusting, but incidentally is an improvement in appearance over other cheap outside chimney constructions.

Furthermore, the circulation of air about the pipe 0, with the provision made for allowing cool air to enter the bottom p and the hot air to pass out of the top of the space inclosed by the housing 9', and the protection afforded to the outside wall of the building by the upper metal strip a and inclosed air space a, act as a safeguard in the event that the pipe becomes overheated.

Some modifications of course may be made in the constructional details above described, and, therefore, I do not limit myself to such details except as necessary to carry into practice the principle of my, invention. V

I claim: 7 n

1. In combination with a stovepipe extending thru a building wall and thence vertically upward on the outside of and spaced from said wall, an inclosure for said pipe,'said inclosure comprising a plate attached to said wall between said wall and said pipe, the width of said plate being greater than the diameter of said pipe, a shell-like metal housing removably attached to said wall at the edges of said plate, said housing spaced from said pipe, said housing and said plate together constituting a vertically extending inclosure about said pipe, the upper end of said housing terminating below the top of said pipe, a hood covering the upper end of said housing, the upper end of said pipe extending thru said hood in close fitting relation, the rim of said hood overlying the upper end of said housing, said hood spaced from the upper end of said housing to permit the passage of air between said hood and said housing, the bottom end of said housing extending below said pipe and the bottom of said inclosure being open to permit air to enter said inclosure.

2. In combination with a stovepipe extending thru a building wall and thence vertically upward on the outside of and spaced from said wall, an inclosure for said pipe, said inclosure comprising a plate attached to said wall between said wall and said pipe, the width of said plate being greater than the diameter of said pipe, a three-sided shell-like metal housing removably attached to the edges of said plate, said housing spaced from said pipe, said housing and said plate together constituting a vertically extendin-g inclosure of rectangular cross-section about saidpipe, the upper end of'said housing terminating below the top of said pipe, a hood covering the upper end of said housing, the upper end of said pipe extending thru said hood in close fitting relation, the rim of said hood overlying the upper end of said housing, said hood spaced from the upper end of said housing to permit the passage of air between said hood and said housing, the bottomend of said housing extending below said pipe and the bottom of said inclosure being open to permit air to enter said inclosure.

. HOMER E. LEASH. 

